// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_REPEAT_CONTROLLER_H_
#define UI_VIEWS_REPEAT_CONTROLLER_H_

#include "base/callback.h"
#include "base/macros.h"
#include "base/timer/timer.h"

namespace views {

///////////////////////////////////////////////////////////////////////////////
//
// RepeatController
//
//  An object that handles auto-repeating UI actions. There is a longer initial
//  delay after which point repeats become constant. Users provide a callback
//  that is notified when each repeat occurs so that they can perform the
//  associated action.
//
///////////////////////////////////////////////////////////////////////////////
class RepeatController {
public:
    // The RepeatController takes ownership of this callback object.
    explicit RepeatController(const base::Closure& callback);
    virtual ~RepeatController();

    // Start repeating.
    void Start();

    // Stop repeating.
    void Stop();

private:
    // Called when the timer expires.
    void Run();

    // The current timer.
    base::OneShotTimer timer_;

    base::Closure callback_;

    DISALLOW_COPY_AND_ASSIGN(RepeatController);
};

} // namespace views

#endif // UI_VIEWS_REPEAT_CONTROLLER_H_
